JPS6324627U - - Google Patents
Info
- Publication number
- JPS6324627U JPS6324627U JP11681186U JP11681186U JPS6324627U JP S6324627 U JPS6324627 U JP S6324627U JP 11681186 U JP11681186 U JP 11681186U JP 11681186 U JP11681186 U JP 11681186U JP S6324627 U JPS6324627 U JP S6324627U
- Authority
- JP
- Japan
- Prior art keywords
- unit
- driver
- power supply
- receiver circuit
- turned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Power Sources (AREA)
Description
第１図は本考案の異種電源ユニツトの保護装置
を備えたシステムの一例を示したブロツク図、第
２図は従来の本体ユニツトに拡張ユニツトを接続
して成るシステムの一例を示したブロツク図、第
３図は第２図に示したシステムのドライバ／レシ
ーバ回路例を示した回路図である。
１……パーソナルコンピユータ本体、２……拡
張ユニツト、４，５……電源ユニツト、６，７…
…電圧検出回路、１２……トランスミツタボード
、２１……レシーバボード。
FIG. 1 is a block diagram showing an example of a system equipped with a protection device for a dissimilar power supply unit according to the present invention, and FIG. 2 is a block diagram showing an example of a system in which an expansion unit is connected to a conventional main unit. FIG. 3 is a circuit diagram showing an example of the driver/receiver circuit of the system shown in FIG. 1... Personal computer main body, 2... Expansion unit, 4, 5... Power supply unit, 6, 7...
...Voltage detection circuit, 12...Transmitter board, 21...Receiver board.
Claims (1)
イバ／レシーバ回路と専用の電源ユニツトを持つ
拡張ユニツトのドライバ／レシーバ回路とを各種
バス及び信号線から成る接続ケーブルを介して接
続して成るシステムにおいて、前記本体ユニツト
及び拡張ユニツトそれぞれに設けられ、接続相手
側のユニツトの電源オン、オフを検出する電圧検
出手段と、接続相手側のユニツトの電源オン時自
己のユニツトのドライバ／レシーバ回路をイネー
ブルとし、接続相手側のユニツトの電源オフ時自
己のユニツトのドライバ／レシーバ回路をデイス
イネーブルとして前記各種バス及び信号線をハイ
インピーダンスとする制御手段とを具備して成る
ことを特徴とする異種電源ユニツトの保護装置。 In a system in which the driver/receiver circuit of a main unit having a dedicated power supply unit and the driver/receiver circuit of an expansion unit having a dedicated power supply unit are connected via connection cables consisting of various buses and signal lines, the main unit Each unit and expansion unit has a voltage detection means that detects whether the power of the connected unit is turned on or off, and when the connected unit is powered on, it enables the driver/receiver circuit of its own unit, 1. A protection device for a dissimilar power supply unit, comprising control means for disabling the driver/receiver circuit of the unit itself and setting the various buses and signal lines to high impedance when the power supply of the unit on the side is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11681186U JPS6324627U (en) | 1986-07-31 | 1986-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11681186U JPS6324627U (en) | 1986-07-31 | 1986-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6324627U true JPS6324627U (en) | 1988-02-18 |
Family
ID=31001750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11681186U Pending JPS6324627U (en) | 1986-07-31 | 1986-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6324627U (en) |
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1986
- 1986-07-31 JP JP11681186U patent/JPS6324627U/ja active Pending